Log-sawing machine



Sept. 28 1926.

R- LANGILL LOG SAWING MACHINE File c 5. 1924 .5 Sheets-Sheet 1 INVENTOR.

Ross L ma/.4

ATTORNEYS.

Sept. 28 1926.

R. LANGILL LOG SAWI NG MACHE NE Filed Oct. 5

1924 3 Sheets-Sheet 3 IN VEN TOR.

Ross LAN G-{LL ATTORNEYS.

Lmeans in a machine of the character de- :noss LANGILL, ol enominee,

' Patented Sept. 28, 1 926. i

1. Q I Maggie Mioii-ieAm-Assrenma TO THE PRESCOTT company,

on ME-NOMINEE, MICHIGAN, a eouronn'riouon m cnlernm.

oegsnwme MACHINE.

Application filed October 'V 3',V '1,924.5V Serial No. 7.4 1303.

h s in ent n log-saw1ng machines. One ob ect of theinvention is to prov de scribed which will permit ofthe use of a band saw as distinguished from circular saws and the like such as now used.

' Heretofore'. it has been necessary to use circular, saws to cut or split logs, of any appreciable length. Theuse ofcircular saws for this purpose rather "than band saws, howeveryhas several disadvantages. It is not prac tical to make circular saws large enough to logs overthirty inches in di- .ameterL Aband saw wastes-only about for- Q ,ty per cent asmuch of the lumber, in the form. of sawdust; as a circular saw, and can v split logs of almost unl mited d ameter. "The band saw, furthermore, is safer to use than a circular saw, the teeth thereof moving directly downward through the lumber wheels 5, ,6 and? may be arrangedasshown sojthat there is no tendency for the log to throw or jump. When a circular saw is "usedthere is'a tendency at ,t1II1QS 'f Q1 the stock to throw or jump back, resulting in "injury and some times death to the operat'orsk In using'a' circular saw for cutting for splitting logs of any-apprec able length,

" it is necessary to provide a support fo'r the logs 'eiitending some distance beyond the 7' saw so thatfth'e portion of the log' which has been c-ut issupported thereby until the remainder has been cut; The support used for thispu'rpose in" connection with circular sawsfcould not be"satisfactorily used with a band saw for the reason "that th'e'feXtended portion thereof would not permit renewal of'theband saw withoutdismantling a. portion ofthe machine. I I

Another object of the invention isto pro- 4 vide an improved machine for cutting or I "splitting logs." '1' 1 Another object is to provide a band saw.

7 with improved means adapted to properly support logs as they are fed through the saw 7 and to permit rjeady'renewal of the saw.

Another object is to provide an improved frame which can be readily appliedto a v. band saw of the usual construction"whereby the saw c logs.

; inatter appear.

relates to improvements in 12 being I supported chain 11 moves along 'or channel member 14 I rand ;14L are: extended an be eficiently used for splitting' n mt e ea new For the purpose'of illustrating the invention, an embodiment thereof is shown in the-improved frame is movable to 'permitre newal of the saw;

Fig.5 is an end elevation, looking toward the right inFig. 3;

Fig. 6 is an end elevation, showing a pair of band saws provided .With' the improvedframe and arrangedlto vmake two cutsin a 9g; an 1 .1"

Fig 7 i t S ction online 7 of Fig. 6; ,In g 1 a band saw 3 is "placed, the Wheels being mountedin suitable 4 Sprocket in F g 1 and 2-t-omove chain 8 along an 7o" 7 2 the machine is shown. as .cqnipl ls ng wheels 1 and 2 over which a inner Chain Way or channel member 9 in the direction of the arrow, the chain extending slightly above the flanges of the channel member soathata log can be placed thereon anc l ca rried forward thereby through saw 3. The'chain-way 9, Joe supportedin any suitable Way,- second chain 11 is driven by sprocket wheels 12 arrangedinthe same manner and adjasuch as by Posts 10. A

cent to sprocket Wheels 5, 6 land 7, wheels such as, by posts .13. The upper] portion of an outside fchain-way similar to chain-way 9. The lower portions of the chainsiide over a support or guidelf) arranged between ipos ts lh and 13 and supportedthereby. The chains maybe driven by a gear Ito-fixed to shaft17; As indicated in Figs. 1 and 2,

suitable gearing may be arranged to drive" wheels l and 2 from gearlfi. llhe ,zo uter ends 18 and 19 :of chain-ways been i cut until the remainder thereof-"has also been cut. -These extended portions of tllB'Clldllll-WZLYS ,would not permit removal W d v i .7 @o-lt'flsaw throughqthe pit QOWithOut ll ra bi nd ethanfinesJWill ther diSmantling a portion the m hine. f no this v I beyond the saw3,to I support the portion of the log which has in any suitablevmanner Cox purpose, the outer end portion 18 of inner chain-way 9 is fixed to a shaft 21 journaled in a bearing :22 with which one of posts 10 is provided, as shown in Figs. 3 to 5. A counterweight 23 is fixed to one end of an arm 2%, the other end of the arm being bent at right angles thereto and secured to a member 25 fixed to shaft 21. \Veight 23 is positioned on arm 24: so that it tends to rotate shaft 21. It therefore requires little effort to swing the outer end 18 of chainway 9 upwardly to the position shown in dotted lines in Fig. 4;.

All log is placed upon chains 8 and 11 and carried forward thereby through saw 3, the extended ends 18 and 19 of chain-ways 9 and ll properly supporting the log until it is split or cut. ll lien it is necessary to renew saw 3 for sharpening or for any other reason, the extended portion 18 of chain-way 9 is swung upwardly to the position shown in dotted lines in Fig. at so that it does not extend beyond saw pit 20. Saw 3 may then he slipped laterally from wheels 1 and 2 and lifted from the pit.

In the embodiment shown in Figs. 6 and 7, two band saws are provided with the improved frame and mechanism for supporting and feeding the logs through the saws, the saws being arranged to make two outs in the log. A. chain-way 26, similar to chain-way 1d. is arranged between the saws 27 and 28. Chain-ways 29 and 30 are similar to chain-way 9 and supported in a like manner each side of chain-way 26. The log in passing through the saws rests upon and is moved forwardly by three chains. The outer extended portion 31 of chain-way 29 is fixed to shaft 32 for upward movement in the same manner and for the same purpose extended portion 18 of chain-way 9. The extended portion of chain-way 30 is constructed in the same manner. Veights are fixed to arms 3st which are connected to the extended portions of chain-ways 29 and 30 to urge the same upwardly in the same manner and for the same purpose as explained above in connection with weight The other portions of the machine may be of any suitable construction and the details thereof are only shown and described with suflicient clearness to enable those skilled in the art to understand the manner in which a band saw can be used efiiciently for cutting and splitting logs, as explained above.

Various changes of structure and arrangement of the parts may be adopted without departing from the spirit of the invention or the scope of the claims.

The invention claimed is:

1. The combination with a pit, a wheel arranged in said pit, a second wheel arranged above said first wheel and in the plane thereof, bearings for supporting said wheels for rotation about relatively fixed parallel axes, a band saw arranged upon said wheels, and means arranged transversely of said plane for supporting and conveying lumber to and through said saw, the end of said conveying means adjacent said saw being arranged between the cutting side of the latter and said bearings and terminating short of the outer edge of said pit.

of means associated with said conveying means and providing an extension thereof extending beyond said edge of said pit, said last-named means being supported for movement with respect to said conveying means in a direction away from said edge of said pit whereby the portion of said saw in said pit may pass between said edge and said last-named means upon lateral movement of said saw toward the outer edge of said pit from operative relation with respect to said wheels and subsequent upward movement of said saw.

2. The combination with a pit. a pair of superimposed wheels, one of said wheels being arranged in said pit, means supporting said wheels for rotation in the same plane and about relatively fixed parallel axes, and a band saw arranged upon said wheels, of an endless chain arranged transversely of said plane and extending between said means and said saw and beyond the outer edge of said pit, means for supporting said chain to permit the latter to support and convey lumber to and through said saw and terminating short of the outer edge of said pit, means extending over said pit and beyond said edge thereof and providing an extension of said chain-supporting means, said extension being movable to inoperative position to effect movement of the chain overlying said pit away from the outer edge thereof whereby said saw may be passed between said overlying chain portion and the outer edge of said pit upon outward lateral movement of the saw from operative relation with respect to said wheels and subsequent upward movement of said saw.

3. The combination with a pit, a pair of superimposed wheels, one of said wheels being arranged in said pit. means supporting said wheels for rotation in the same plane and about relatively fixed parallel axes, and a band saw arranged upon said wheels, of an endless chain arranged transversely of said plane and extending between said means and said saw and beyond the outer edge of said pit, means for supporting said chain to permit the latter to support and convey lumber to and through said saw and terminating short of the outer edge of said pit, means extending over said pit and beyond said edge thereof and providing an extension of said chain-supporting means and being pivotally connected to the latter for plane to inoperative position to effect movementofthe chain overlying said pit away from the outer edge thereof whereby said saw may be passed between said overlying chain portion and the outer edge of said pit upon outward lateral movement of the saw from operative relation with respect to said -wheels andsubsequent upward movement of said saw.

4. In a log-sawing machine having a plt,

a pair of wheels mounted one above the other, bearings for said wheels, one of said wheels being positioned in said pitfa band saw extending around said wheels for movement thereby, and means arranged to support alog for cutting by said saw a portion of said meansbeing arranged between the 7 cutting portion of said saw and said bearings and extending beyond said saw and over said pit, said portion being movable to permit the lower portion of said saw to pass between said portion and the outer edge of said pit upon outward lateral movement or" said saw from operative relation with respect to said wheels and subsequent upward movement of said saw.

5. In a log-sawing machine having a pit, a pair of wheels mounted one above the other, one of said wheels being positioned insaid pit, a band saw extending around said'wheels for movement thereby, members associated with said saw and arranged adja cent each side thereof to support a log for cutting thereby, chains guided by said members and adapted to feed the log to-said saw, and means for moving said chains, said members being extended beyond said saw and over said pit, the extended portion of one of said members being mounted for pivotal movement with respect thereto to permit removal of said saw through said pit.

In Witness whereof I hereto afiix my signature.

Ross LANGILL. 

